Circuit breaker control system



March 14, 1933.

H. V. NYE

CIRCUIT BREAKER CONTROL SYSTEM Filed June 20, 1928 Patented Mar. 14,1933 ui'i e sT Tss PATENT ossice QGHPAZT 0F MILWAUKEE, WISGGNttH@QRBQRAWEQN til? DEM viieetten med 2% ce iJEOii systems t the lite i, Le.t We 0? a the inventien is to provide centroi system in which thecircuit 5 reeker will. he eutcmeticeii y' reciosed after being trippedend it the circuit breaker does not remain closed after a predeterminetinumber of IGCIOSHEBS it wiii remain open until the condition cf thecontrol system is readjusted,

Another object is the provision of a circuit breaker control system inwhich a motor driven centimiiei is utilized and in which spiings antithe like are nnnecessar for returning the centroiier to an initleiposition; more specifically, such a system in which the controller isalways driven in the same direction. i

A further object is the provision of o circuit breather control systemwhich is simple, reliable, and of minimum expense. Other objects wilteppeer hereinafter as the de scriptien oi the invention proceeds.

The novel feet-tires of the invention will appear from the specificationanti the accompanying; teeming it part thereot Etfifii ciisciesine oneembodiment ct the inventitoii, and these ncvei features ere intendedeintezi ent in the cieims. The n e cf the is e die,-

onc eniheciiment e ii the circuit 0e h centseiteel is shown it cicsecircuit Remiprey P 3 I crater g3. tins en en everieeci wh DTPEXP-stimuli 3 JV TitspeQti biceet is I A reiey 8 he preweieci t'ei" cener-setti g the circiiit of the CiUSHW SQELGKZUIGL 5. An

other relay 9 is previdieci for eontreiiing meter 10 for operating acontreiieir it. The reiey 9 is provided with e, holding contact 9" and econtrol contact 9 which iettei" initiates the centreiiing operation ofthe motor lit The controller 11 is prefemhiy of the drum type end. isdiagrammatically intiicateci es driven in it suitable manner by themotor 10. The controller 11 has its sui'iece developed in the piene oithe aper. Mounted on the surface of the centi'oiier are a number ofcent-acts adapted to engage e number of reiativei stationery contactsrespectively es wiii he more perticuieriy set w forth. A contact 12'which extentis es heme shown nearly mound the circumference of thecentreiiei? is adept/ed to bridge the stetioneiy contacts 13, 1 efteithe centroiiei" has moved siightiy to the ieit es view sci the wimwingwAnother centect 15 is previcie'which in the p-ositien of thecentroiliei' es siztown inieiges twe stationery it 1?. The ice cn of thecm 1% and is a A. 5-? 1 l Wilma ion eti gill tat The source 26 isconnected to the control buses 27, 28.

The system also includes, as here shown,

a control switch 29 normally making con-.

tact with contacts and also adapted to bridge contacts 31. Anothercontrol switch relay contacts 3, trip coil 4, auxiliary switch 7 to.control bus 28. Simultaneously therewith the relay 3 energizes the relay9, the circuit bein through contacts 30 of switch 29 and t e relaycontacts 3, as is clear. The opening of'circuit breaker 1 as a result ofenergization of the trip coil 4 also opens the auxiliary switches 6 and7 and deenergizes relay 3. The relay 9 however remains in the energizedosition a circuit throu h its operating coil aving been closed from us28 through contact 9 through contacts 17, 15, 16 to the bus 27. i

The energization of relay 9 also causes the 7 starting of the motor 10by closure of a circuit from bus 28 through motor 10, contacts 9 to bus27 Rotation of motor 10 causes contact 12 to bridge contacts 13, 14thereby completing an independent circuit .between buses 27, 28 throughmotor 10. The

motor 10 is now in a condition to continue its rotation independently ofthe position of relay 9. As soon as contact 15 leaves contacts 16, 17the relay 9 is deenergized.

When contact 18 of the controller reaches and bridges contacts 21, 22 acircuit is com-' pleted between buses 27,28 through relay 8 the closureof which energizes the closing solenoid 5 from the control buses, as isclear. The solenoid 5 consequently closes the circuit breaker 1. It willbe remembered that the motor 10 keeps on rotating, being stillenercontact 12. Consequently, if.

gized throu the circuit reaker 1 is again opened, the

.abnormal condition still obtaining on the main line, it will be againclosed when contact 19 bridges contacts 21, 22, in a manner similar tothat described in connection with contact 18. It will be clear that thecircuit breakerl will be reclosed, if it does not remain closed, apredetermined number of times depending upon the number of contacts 18,19,20.

If the circuit breaker 1 is again tripped out after the lastcontact-such as 20 has caused it to close, the controller 11 will bedriven by motor 10. until contact 12 leaves contacts 13. 14 thusstopping motor 10. The

circuit breaker 1 will now remain'open until the system is read'ustedfor automatic reclosure of the circuit breaker. This ma be accomplishedby closure of control switc 32 thereby causingrelay 8 to energizesolenoid 5 to close circuit breaker 1. The closure of the circuitbreaker also closes auxiliary contact 6 thereby completing a circuitthrough motor 10 through that auxiliary contact and through thecontroller contacts 25, 23, 24. Theinotor 10 now runs until the contact23 leaves contacts 24, 25 thereby stopping the motor and the controllerin the position as shown on the drawing in which position it is again incondition to cause automatic reclosure of the circuit breaker 1 inresponse to the abnormal condition relay 8.

If it be assumed that the circuit breaker 1 opens in response to anabnormal condition, with the parts as shown in the draw ing, andthatafter contact 18 has caused reclosure of the circuit breaker 1 itremains closed, the motor 10 will as hereinbefore described, continue torotate and each succeeding contact 19, 20, etc. will cause energizationof the closing solenoid 5, but this will not change the condition of thecircuit breaker as it has been assumed that the abnormal condition wasremoved before the first reclosure. Under these conditions the motor 10will not stop when contact 12 leavescontacts 13, 14, but will continueto rotate because there is a circuit through the motor from bus 28through auxiliary contact 6 and controller contact 23 to bus 27. It willtherefore be evident thatv the con troller 11 will be broughtto itsinitial position by motor 10 if the circuit breaker 1 does not trip outafter the last contact such as 20 has caused the closure thereof. If

such is not the case then a controller stops short of its initialposition and no fur her automatic reclosures of the circuit breaker 1can take place, until the system is read: justed as hereinbefore'described.

The circuit breaker 1 may be trippe manually by operation of the controlswitch 29 to bridge contacts 31 thereby energizing trip coil 4. Suchmanual tripping does not however energize relay 9 as the control switch29 also leaves contacts 30 thereby opening the possible circuitto relay9. Y i

It should be understood that it is not desired to limit the'invention tothe exact details of construction shown and described, for obviousmodifications within the-scope of the claims may occur to personsskilled in the art.

It, is claimed and desired to secure by Letters Patent:

1. In combination, a circuit breaker, means for closing. said circuitbreaker, means including an overload relay for caus- 'ing said circuitbreaker to open, a rotary said circuit breaker for causin timing devicehaving an initial position, a single motive device for rotating saidtiming device in one direction only, means responsve to the actuation ofsaid overload relay for energizing said motor and thereby causing saidtiming device to rotate from its initial position continuously throughone complete revolution, and means for'causing said timing device toactuate said circuit breaker closing means to reclose said circuitbreaker.

2. A circuit breaker reclosing system comprising an automatic circuitbreaker, means for closing said circuit breaker, means for causing saidcircuit breaker to open, a controller having an initial position, asingle motive device for o crating said controller from its initialposition through its intermediate position to its initial position inone direction only, means whereby automatic opening of said circuitbreaker initiates the operation of said single motive means, and meansincluding a plurality of spaced contacts on said controller forrepeatedly causing said closin means to close said circuit breaker a preetermined number of times only.

3. In a circuit breaker reclosing-system comprising an automatic circuitbreaker,

v means for closing said circuit breaker, means for causing said circuitbreaker to open, a

controller having an initial position, a single motor device forrotating said controller, means operable upon opening of said motordevice to continually rotate said controller in one direction only fromsaid initial position through one complete revolution, and meansincludin a contact on said controller for causing said closing means toreclose said circuit breaker.

d. In combination, an automatic circuit breaker, means for closing saidcircuit breaker, means for causing said circuit breaker to open, acontroller having an initial position, a motor for operating saidcontroller from its initial position through its intermediate positionsto its initial positon by movement of said motor in the same direction,means whereby automatic 'opening of said circuit breaker causes saidmotor to operate, means including a contact on said controller forcausing said closing means to close said circuit breaker, and meansdependent upon said circuit breaker remaining closed for causing saidmotor to bring said controller to its initial position.

5. In combination, an automatic circuit breaker, means for closing saidcircuit breaker, means for causing said circuit breaker to open, acontroller havin an initial position, a motor for operating saidcontroller from its initial position through its intermediate positionsto its initial position by movement of said motor in the same direction,means whereby automatic openmg of said clrcult breaker causes said motorto operate, means including a contact on said controller for causingsaid clos ing' means to close said circuit breaker, and

.means dependent upon said circuit breaker remaining open for causingsaid motor to stop before said controller has reached its initialposition.

6. In combination, an automatic circuit breaker, means for closing saidcircuit breaker, means for causing said circuit breaker to open, meansincluding motor rotating always in the same direction when in operationfor controlling said circuit breaker to automatically reclose apredetermined number of times, means whereby after a predeterminednumber of reclosures said circuit breaker remains 0 en if again opened,and manuall contro lable means for causing closure 0 said circuitbreaker and for resetting said .reclosing control means in condition toagain automatically reclose said circuit breaker when opened.

7. In combination, an automatic circuit breaker, means for closing saidcircuit breaker, means for causing said circuit breaker to o n, acontroller, a motor operable always in the same direction for operatingsaid controller, means whereby autornaticv opening of said circuitbreaker causes said motor operated controller to cause reclosure of saidcircuit breaker a predemrmined number of times, means whereby after apredetermined number of reclosures said circuit breaker remains open ifagain opened, and manually controllable means for causing said motor. torestart in the same direction to bring said controller to a osition inwhich further movement thereo will again be adapted to automaticallycause a predetermined number of reclosures of said circuit breaker.

8. In combination, a circuit breaker, means for closing said circuitbreaker, means for causing said circuit breaker "to open, a controllerfor controlling the reclosure bf said circuit breaker, a motor foroperating said controller, a contact on said controller for maintainingthe circuit of said motor closed for a predetermined extent of travel ofsaid controller, an auxiliary contact on said circuit breaker closedwhen said circuit means for causing said circuit breaker to.

open, a controller, a motor for; operating said controller, meansmcludmgia relay reits FUND

. said motor before said first contact has I means for closing saidcircuit breaker, means opened the maintaining circuit of said relay, andmeans including another contact on said controller for causing saidclosing means to close said circuit breaker.

10. In combination, a circuit breaker, means for closing said circuitbreaker, means for causing said circuit breaker to open, a

: controller, a motor for operating said con-- troller, means includinga rela responsive to said opening means for closmg a circuit forsaidmotor, means including a contact on said controller for maintainingthe circuit of said relay for a predetermined extent of travel of saidcontroller, means including a second contact on said controlleroperative to maintain the circuit through said moto'r before said firstcontact has opened the maintaining circuit of said relay, an auxiliarycontact on said circuit breaker closed when said circuit breaker isclosed,'means including a third contact on said controller whereby jointclosure of said third contact and said auxiliary contact maintains acircuit through saidmotor after said second controller contact hasopened, and means including another contact on said controller forcausing said closing means to close said circuit breaker.

11. In combination, a circuit breaker,

operable when energized to cause said circuit breaker to open arotatable controller having a plurality o spaced contacts thereon, amotor for rotating said .controller, a relay, overload responsive meansfor causin said relay to simultaneously energize said circuit breakeropeningmeans and said motor, means for maintaining the energization ofsaid motor through certain of said contacts until said controller hasrotated continuously in one direction through one complete revolution,and means for periodically energizing said circuit breaker closing meansthrough other of said contacts motorrcircuit, and means including aplurality of spacedcontacts on said controller for repeatedly causingsaid closing means to close said circuit breaker until it remainsclosed. I q

13. In combination, an automatic circuit breaker, means for closing saidcircuit breaker, means for causing said circuit breaker to open, acontroller, a motor for operating said controller, said motor rotatingalways in the same direction when the circuit-thereof is closed, meanswhereby automatic opening of said circuit breaker causes closure of saidmotor circuit, means including a contact on said controller for causingsaid closing means to close said circuit breaker, and means dependent onsaid circuit. breaker remaining closed for causing said motor to bringsaid controller to its initial osition. f

14. n combination, an automatic circuit breaker, means for closing, saidcircuit breaker, means for causing said circuitbreaker to open, acontroller, a motor for operating said controller, said motor rotat ingalways in the same direction when the circuitthereof is closed, meanswhereby automatic opening of said circuit breaker causes closure of saidmotor circuit, means including a contact on said controller for causingsaid closing meansto close said circuit breaker, and means dependent onsaid circuit breaker remaining open for causing said motor to stopbefore said controller has reached its initial position.

15. In combination, a circuit breaker,

means for closing saidcircuit breaker, means for causing said circuitbreaker to open, a controller for controlling the reclosure of saidcircuit breaker, a motor for. operating said controller, said motorrotating always in the same direction when the circuit thereof isclosed, a contact on said controller for maintaining the circuit of saidmotor closed for a predetermined extent of travel of said controller, anauxiliary contact on said circuit breaker closed when said circuitbreaker 1S closed, a second contact on said controller connectible inseries with said auxiliary contact, and means whereby joint closure ofsaid second and auxiliary contacts maintains the same circuit throughsaid motor after said first controller contact has been. opened. Y

16. In combination, a circuit breaker, means for closing said circuitbreaker, means for causing said circuit breaker to open, a controller, amotor for operating said controller,'said motor rotating always in thesame direction when the circuit,

circuit through said motor before said first contact has opened themaintaining circuit of said relay, and means including another contacton said controller for causing said. closing means toclose said circuitbreaker.

17. In combination, a circuit breaker,- mcans for closing said" circuitbreaker,

means for causing said circuit breaker to ing a circuit for sai motor,means includopen, a controller, a motor for operating said controller,said motor rotating always in the same direction when the circuitthereof is closed, means including a relay responsive to said 0 eningmeans for closing a contact on said controller for maintaining thecircuit of said, relay for a predetermined extent of travel of saidcontroller, means including a second contact on said controlleroperative to maintain the;

circuit through said motor before said first breaker, v means forcausing said circuit breaker to open, a drum controller, a motor foroperating said controller, means whereby fautomatic openingofnsaidcircuit breaker causes said motor to operate, means including aredetermined number of contacts on said rum for causing repeatedenergization of said closing means, and means includingacontact on saiddrum in circuit with said motor whereby said motor is maintained inoperation irrespective of the condition of said circuit breaker untilsaid drum has made nearly one complete revolution.

19. In combination, an automatic circuit breaker, means for closing saidcircuit breaker, means for causing said circuit breaker to open, a drumcontroller, a motor for operating said controller, means wherebyautomatic opening of said circuit breaker means including relativelystation tacts for com leting a circuit thro said motor to rotate saidvdrum the remainder of said one revolution.

20. In combination, a circuit breaker, means for closing i said circuitbreaker, means for causing said circuit breaker to open, a drumcontroller, a motor forvoperats ing said controller, means wherebyautomatic opening of said circuit breaker causes said motor to operate,a contact on said drum extending peripherally nearly 360,

con-

motor throng said contact, a second contact on said 'drum insulated fromsaid first named contact, said second contact extend I ing peripherallynearlythe difierence between 360 and the extent of said fi'rst'contact,means including relatively stationary contacts for completing thecircuit of said motor through said second contact, and

said

means including a predetermined number of contacts on said'drum forcausing energizetionof said closing means.

In testimony whereof, the signature of the inventor is afiixed hereto.

HENRY'V. NYE.

causes said motor to operate, Jeans includ- 1 ing a predetermined numberof contacts on said drum for causing repeated energ1za-. tion of sandclosing means, means includ- 7 ing a contact on said drum in-circuitwith fill said motor whereby said motor is maintamed in operationirrespective of the condition of said circuit breaker until said drumhas made nearly one complete revolution,- and means dependent upon thecondition or said circuit breaker for causing

